Flow injection based methods for fast screening of antioxidant capacity

The role and importance of antioxidants in different fields, ranging from physiology to food technology, have become evident in the past years, requiring adequate analytical methodologies. Therefore, the determination of antioxidant capacity as a routine or screening analysis fosters its automation....

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Bibliographic Details
Published in:Talanta (Oxford) 2009-03, Vol.77 (5), p.1559-1566
Main Authors: Magalhães, Luís M., Santos, Miguel, Segundo, Marcela A., Reis, Salette, Lima, José L.F.C.
Format: Article
Language:English
Subjects:
ABTS
Analytical chemistry
Antioxidant capacity
Antioxidants - analysis
Automatic methods
Benzothiazoles
Chemistry
DPPH
Electrochemical methods
Exact sciences and technology
Flow injection analysis
Flow Injection Analysis - methods
Folin-Ciocalteu
Free Radical Scavengers
Methods
Phenethylamines
Sulfonic Acids
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Summary:The role and importance of antioxidants in different fields, ranging from physiology to food technology, have become evident in the past years, requiring adequate analytical methodologies. Therefore, the determination of antioxidant capacity as a routine or screening analysis fosters its automation. In this context, several flow injection methods based on scavenging of 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulphonate) radical cation (ABTS +) or 2,2-diphenyl-1-picrylhydrazyl radical (DDPH ) or based on the determination of total reducing capacity have been proposed. The objective of the present review is to critically compare the different approaches, regarding their degree of automation, their performance vs. the respective batch procedure and its applicability to real samples.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2008.10.034